Answer:
0.031 m
Explanation:
Density of copper = ρ = 8960 kg/m³
r = Radius = 0.262 m
m = Mass of plate = 61.5 kg
v = Volume of plate = Volume of cylinder = πr²h
So, thickness of plate is 0.031 m
Answer:K.E=449598.5j
Explanation:
Kinetic energy of a moving car=1/2mv^2
Where m is the mass of the car
And V is the velocity of the car
K.E=1/2 ×1300×26.3^2
K.E=449598.5j
Answer:
It would take the cyclist 2 hours to cycle to school.
Explanation:
5km/hr for 2 hours would be 10km.
Answer:
2N
Explanation:
Given that a student pulls down with a force of 40 N on a rope that winds around a pulley of radius 5 cm. find the torque?
Solution
Using the formula
Torque = Force × radius
I.e
Torque = F r
Where
F = 40N
r = 5 cm = 5/100 = 0.05m
Substitute all the parameters into the formula
Torque = 40 × 0.05
Torque = 2 N
Therefore, the torque on this scenario is 2 N
The equilibrium of the basketball makes it bounce lower every time. If it had perfect equilibrium, then it would bounce up to the same height every time. The kinetic energy is from when the ball hits the ground and is bouncing back up. But gravity will soon make it potential when it stays on the ground and when it stops rolling. When it rolls, the kinetic energy keeps it rolling until it gets so weak, there is only potential energy left to keep it stat
